.Net Core

This problem occurs when the table is deleted in cascade mode. An error occurs when a primary key information is deleted. Because there are foreign key information, a trigger is used to delete all the information.  create trigger trigCategoryDelete (

I often see some people discussing the new features and methods of Framework 4, so I want to write a program to find the new methods and classes in framework4.0.       Program ideas:Dynamic LoadingMscorlib. dll of V4 and V2Assembly, compared by

Last time I wrote this article: conventional Introduction: Asp.net Mvc 3 loading cshtml files to create custom pages Problems: simple data list, paging OK, but with other external factors, such as query, sorting, and paging, how can we combine them?

This period of time has been busy with projects, consisting of several layers of DAL + WCF + WinForm. MySQL + MySQL. Data. dll Driver used by the database. However, the following errors are often encountered during use:An error occurred while

Recently, I want to create a project: music player. General UI: Click the "X" icon on the right to delete the selected song. Because the real interface code is copied, And the predecessors use concatenated strings, and then bound to the page. The

  1. Execute the Stored Procedure SqlConnection conn = new SqlConnection (); // establish a connection     Conn. ConnectionString = Config. ConnStr; // connection string     Conn. Open (); // Open the connection SqlCommand cmd = new SqlCommand ();

  REST (Representational State Transfer) and SOA (Service-Oriented Architecture) are two mainstream Architecture ideas in today's software Architecture and are becoming increasingly popular in the development process. As the next-generation

  Differences between Application objects and Session objects The Application object is multi-session, multi-page The Session object is a single Session, multi-page The value stored in the Session object can be accessed throughout the user

  The previous sections introduce some basic features of the rest wcf Service. This section describes how to use the rest wcf Service Based on HTTP standard actions. The architectural style of RESTful services is based on the HTTP protocol, and its

  Stack and Heap ). The stack is used to save commands during the running process. The memory area of the value type variable (a thread corresponds to a stack). The stack structure is the same as that of the data structure, "Advanced and later ". A

  Template Method mode: Defines the skeleton of an algorithm in an operation, and delays some steps to the subclass. The Template Method allows the subclass to redefine certain steps of an algorithm without changing the structure of an algorithm.    

    I remember the interviewer asked me this question during an interview: "Let's talk about your understanding of viewstate ."   My answer at the time was: "I rarely use viewstate. In general, I choose to disable viewstate"   I don't know if I am

  ASP. NET provides three main methods for capturing and responding to errors when an error occurs: Page_Error event, Application_Error event, and application configuration file (Web. config ).   If you do not call Server. ClearError or capture an

Public partial class _ Default: System. Web. UI. Page { Protected string title = "Hello everyone"; // front-end Code Protected void Page_Load (object sender, EventArgs e) { DataSet ds = new DataSet (); String SQL = ConfigurationManager.

Request. ServerVariables ("REMOTE_ADDR") 'to obtain the access IP AddressRequest. ServerVariables ("LOCAL_ADDR") 'same as aboveRequest. ServerVariables ("SERVER_NAME") 'to obtain the Server IP AddressRequest. ServerVariables ("HTTP_REFERER") 'to

Using System;Using System. Collections. Generic;Using System. ComponentModel;Using System. Data;Using System. Drawing;Using System. Linq;Using System. Text;Using System. Windows. Forms;Using System. IO;Using System. Net;Using System.

  For ease of deployment, we generally make Windows Services written in C # Into an installation package. After the service is installed, You need to manually start the service for the first time, which is inconvenient. I checked some information on

  Scenario Many websites require people to register before accessing the content or making comments. How can a website such as Niu Mao make people remember every website they have registered. During the registration process, you can send an email to

    After writing so many articles, I believe that readers should have a certain understanding of dynamic controls. The following describes the forms commonly used by enterprises by dynamically generating controls. At present, the use of dynamic

  This article continues with the previous articles about the WCF development framework, and introduces some experience and knowledge about WCF. It mainly introduces the problems encountered during the use of WCF development and the solutions, mark